Filter cartridge UNICEL replacement filter Rainbow DSF-35, Waterway Plastics. Height: 118 mm, outside diameter: 125 mm, and inner diameter: 54 mm. The top of the cartridge open and the bottom of the cartridge open

Filter cartridge UNICEL replacement filter Rainbow Leaf Canister. Height: 338 mm, outside diameter: 125 mm, and inner diameter: 54 mm. The top of the cartridge is closed with raised ring and the bottom of the cartridge open

Filter cartridge UNICEL replacement filter Rainbow DSF-50, Waterway Plastics. Height: 168 mm, outside diameter: 125 mm, and inner diameter: 54 mm. The top of the cartridge open and the bottom of the cartridge open